G03G 2221/1678
Frame structures
G03G2221/1678 (Frame structures) appears on 2,026 US grants and 1,813 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,026
- Published applications
- 1,813
- Assignees
- 131
- Inventors
- 2,187
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 24 | 0 |
| 1987 | 27 | 0 |
| 1988 | 14 | 0 |
| 1989 | 25 | 0 |
| 1990 | 26 | 0 |
| 1991 | 28 | 0 |
| 1992 | 26 | 0 |
| 1993 | 18 | 0 |
| 1994 | 23 | 0 |
| 1995 | 18 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 18 | 0 |
| 1999 | 24 | 0 |
| 2000 | 17 | 0 |
| 2001 | 9 | 7 |
| 2002 | 12 | 19 |
| 2003 | 12 | 18 |
| 2004 | 19 | 24 |
| 2005 | 14 | 40 |
| 2006 | 26 | 71 |
| 2007 | 29 | 95 |
| 2008 | 50 | 91 |
| 2009 | 52 | 112 |
| 2010 | 100 | 136 |
| 2011 | 109 | 150 |
| 2012 | 135 | 123 |
| 2013 | 153 | 78 |
| 2014 | 160 | 120 |
| 2015 | 135 | 90 |
| 2016 | 118 | 78 |
| 2017 | 68 | 63 |
| 2018 | 58 | 54 |
| 2019 | 60 | 48 |
| 2020 | 58 | 67 |
| 2021 | 62 | 70 |
| 2022 | 58 | 63 |
| 2023 | 61 | 44 |
| 2024 | 50 | 54 |
| 2025 | 36 | 43 |
| 2026 | 33 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image forming apparatus including developing device supporting structure having guide groove29 Sep 2026US 12,748,373 B2Brother Kogyo Kabushiki Kaisha
- Printer and integrated light source module thereof1 Sep 2026US 12,724,380 B2Avision Inc.
- Sheet conveyance apparatus and sheet conveyance system25 Aug 2026US 12,715,723 B2Canon Kabushiki Kaisha
- Developing cartridge including shaft and cam having cam surface25 Aug 2026US 12,717,269 B2Brother Kogyo Kabushiki Kaisha
- Image forming apparatus capable of suspending image formation of image forming device when access cover is open18 Aug 2026US 12,710,707 B2KYOCERA Document Solutions Inc.
- Image forming apparatus8 Oct 2026US 2026/0310128 A1Sharp Kabushiki Kaisha
- Interlock mechanism and image forming apparatus1 Oct 2026US 2026/0299506 A1FUJIFILM Business Innovation Corp.
- Housing and image forming apparatus24 Sep 2026US 2026/0288053 A1FUJIFILM Business Innovation Corp.
- Drum unit24 Sep 2026US 2026/0288056 A1Brother Kogyo Kabushiki Kaisha
- Cover, housing, and image forming apparatus10 Sep 2026US 2026/0267278 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Process cartridge and image forming apparatus280US 5,585,889 ACanon Kabushiki Kaisha · 1996
- System for forming color images217US 6,708,011 B2Seiko Epson Corporation · 2004
- Integral safety interlock latch mechanism210US 6,032,004 AXerox Corporation · 2000
- Process cartridge, method for assembling process cartridge and image forming appararatus167US 5,500,714 ACanon Kabushiki Kaisha · 1996
- Image forming apparatus and a unit detachably used in the same99US 4,500,195 ACanon Kabushiki Kaisha · 1985